ASTROSAT CZTI

Data Quality Report

Orbit 35991

Creation date: 2022-07-19T01:02:04.726621
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_050T19_9000005156_35991cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35991cztM0_level2_quad_clean.evt
Size (bytes)566,979,840104,955,840
Size540.7 MB 100.1 MB
Events in quadrant A2,753,304729,888
Events in quadrant B2,859,421723,778
Events in quadrant C5,559,815660,787
Events in quadrant D5,600,515653,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120463
B0123712
C0203452
D0206672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5874120.204290%
B5874170.289411%
C587474112.614913%
D587462110.572012%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7157 5875 0 0 0.00% 0.00%
B 7157 5875 10 10 0.14% 0.17%
C 7157 5874 692 692 9.67% 11.78%
D 7157 5875 555 555 7.75% 9.45%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 182736 1365.86 663 649 133.3
A 13 254 8673 60.19 663 649 133.3
A 3 137 7090 48.31 663 649 133.3
B 5 172 120111 961.69 654 638 124.2
B 0 190 39205 310.44 654 638 124.2
B 4 171 38174 302.14 654 638 124.2
C 9 187 2703798 19528.38 599 604 138.4
C 15 214 232353 1674.2 599 604 138.4
C 9 69 140879 1013.37 599 604 138.4
D 10 118 1259328 8407.79 614 597 149.7
D 12 235 932383 6223.94 614 597 149.7
D 12 227 382624 2551.78 614 597 149.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter